/*
 * Copyright 2006 Robert Burrell Donkin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package rat.element.comparator;

import java.io.File;
import java.util.Comparator;

class FileNameComparator implements Comparator {

    public int compare(Object first, Object second) {
        int result = 0;
        File firstFile = (File) first;
        File secondFile = (File) second;
        if (firstFile == null) {
            if (secondFile != null) {
                result = 1;
            }
        } else {
            if (secondFile == null) {
                result = -1;
            } else {
                final String firstName = firstFile.getName();
                final String secondName = secondFile.getName();
                result = firstName.compareTo(secondName);
            }
        }
        return result;
    }

}
